The photoshows are executed using ProShow Gold by Photodex.

When you click on one of the shows, it will ask you if you
want to download the Photodex Viewer. You will have say yes
to see a show.

When the show page comes up. You can click on it (left 
mouse button) and the show will start. At anytime you 
can use the right mouse button to execute commands The
following commands are available:

Pause, Next slide, Previous slide, Stop, Full screen, 
Mute, Volume, About Photodex presenter